Carbureter



A. SCHNHD.

CARBURTER.

APPLICATION F|LEn1uNE12,191.

1,3 1 1,5532., .Patented my 29, 1919.

ly//l//l//l INVENTOR BY 9m ATTORNEY .ALBERT SCH] lIID, F LONG BEACH, N'EW YORK.

CARBURETER.

Specification of Letten Patent. Iiatented July 29, 1919. v

application ined June'ia, 191s.v serial Nt. 239,685.'

To all 'whom it ma concern:

Be it known tiat I, ALBERT SCHMID, a

citizen ofthe United. States, and a resident of Long Beach, L. I., New York, have made a new and useful Invention in Qarbureters, of which the following is a specification.

This invention relates to charge forming" devices for internalcoinbustion engines and more particularly to devices supplemental to the main carbureter for forming combustible charges for starting and during the warming' up period.

The use of heavy not readily .ing charge forming device by mea-ns of which (during the warming up periods and until the engine is sufficiently warm to be operated upon the main carbureter) readily combustible charges may besupplied independently of the main carbureter.

A further object is to provide an efficient electrically heated device of this character which with a relatively small consumption of electric energy will effectively heat the fuel content of the starting charges in such manner that when the charges reach the engine cylinders they will be readily inflammable and will burn with a minimum of objectionable deposit or smoke.

This as well as other objects, Which will readily appear to those skilled in this particular art, I attain by means of the device illustrated in the single sheet of drawings accompanying andforming a part of this application and in whichv theligure represents in sectional elevation a carbureter einbodying this invention.

The device primarily consists of a tortuous passage through which the combustible inflammable liquid fuel Such as kerosene and distillaes u and some of the so called commercialgaSoQ-f lenes in internal combustion enginesandf'; especially in engines subject to varying loads" i. 4chamber cli irges, or at least the fuel contentthereof, pnss, an electric heater in heat transferring relation to said passage and a liquid agent having relatively great capacity for heat storage and which is in 4heat. transferring relation with reference to said tortuous passage-and said electric heater.

In' my application Serial No. 239,684, tiled concurrently herewith I have shown a solid heat storage agent instead of the liquid agent of' this application.

'lheY form of device shown inthe, drawings consists of a housing 2 having a base 3 and a vcap or cover 4 whereby an annular 5 is formed. The base is provided with-a tubular member 6 formed integrally `-with the base 8 and side walls 2 and which rises centrally from the base and passes through a central opening formed for its reception incap 4.

The inner surface of tubular member 6 is provided with radial heat absorbing ribs 7 which extend longitudinally thereof so that the heat from the exhaust gases derived from the engine to which the device is attached may be readily transferred to the tubular member proper and through its walls to chamber 5 surrounding same.

Cap 4 'is preferably insulated from 'ex` haust pipe 8 by means of an insulating gasket 9 formed of fiber or vulcanite or other suitable heat insulating material. The tubular member 6 extends a short distance below floor l0 of the base member 3 and to the lower face 0f the base member which is connected to an exhaust pipe 11 but spaced therefrom'by means of an insulating gasket l2 similar to gasket 9. Base 3 is provided with an air chamber 13 surrounding the lower portion of tubular member 6 and provided With an air inlet 14 and an air outlet l5. The outlet 15 is adjacent to 'a fuel nozzle 16 the effective area of which is controlled by a needle valve 17. The air outlet 15 and the fuel nozzle communicate with tubular chamber 18 in communication through a passage 19 with a tubular conduit 20. This conduit 20 is formed of a Ametal tube preferably copper coiled about the outer surface of tubular member 6 so as to form a tortuous passage for the mixture composed of the air delivered through outlet l'and the liquid fuel delivered through nozzle 16. The outlet 21 of the tortuous passage communicates with the engine'inlet manifold 22 and with A outer case 26 and insulating material 27.211'- ranged so as to space the convolutions of said wire'one from the other and from the outer case. The resistance wire by means of connectors 28 and 29 and terminals 30 and 31 is connected in a circuit 32 supplied Vwith energy from a storage battery (any other suitable source of electric energy may serve) and the circuit is controlled by means of a switch 34. Fuel nozzle 16 is conf" trolled by means of a valve 35 slidably mounted within tubular member 18 and which has an enlarged portion 86 serving as a guide and also as a valve for controlling the inlet to passage 19. -A coil spring 37 surrounding the stem 38 0f valve 35 andv located between the upper face of enlarged portion 36 and an inclosure cap 39 tends to yieldingly force said valve toward its seat.

An auxiliary air inlet 40 is provided in an extension 41 of cap 4 axially in line with fuel nozzle 16 and the valve 42 slidably mounted on valve stem 38 controls the auxiliary air inlet.

Valve stem 38 at its up er end is provided with an enlargement 43 w ich passes through a bore in cap 44:; said cap being threaded into cover 4 in line with the auxiliary air inlet 40. This enlargement serves as 'a cl'osure for said bore and as a guide for the.

valve stem, and, between the lower face of this enlargement and the upper face o f vali'e 42 a sprincr'el is interposed. This spring tends to yieldingly hold valve 42 tol its seat.

A bell crank 46 under the control of the operator is operatively connected at 17 to the upper end of valve stern 38 so that the operator can control the operation of the de- VlCE.

Fuel nozzle 16 derives its fuel from any suitable source of supply throu dh a pipe 48 which connects with a float chamgiier 4:9 of any well known constructionhai-'ing a float 50 and a valve 51 for cont-rolling the level of liquid 52 within the float chamber.

The float chamber is connected with cham- '1 bei.` through a. passage 53 routrolled by a valve 5l having a lever arm Chamber 5 connects with the fuel nozzle through a liquid passage 5G vformed in the base and from this const-ructionit will be seen thatthe level of liquid in chamber 5 will be the same as the level in float chamber 52 so long as valve 5i is open. The liquid 52 in chamber 5 is arranged to cover about one-half of the electric heater and the tube forming the tortuous passage and acts as a heat storage vmedimingle with the vapors arising from the heat storage liquid in chamber 5 and the mixture passing through the 'tortuous passa e.

aving thus described my invention what I claim isl. In a charge forming device for internal combustion engines, a fuel nozzle, a tortuous assage communicating therewith, means or electrically heating said passage, means for passing exhaust gases in heat conducting relation to said passage, and a heat storage agent arranged in heat transferring relation to said passage and comprising a body of liquid arranged so as to absorb heat from said electric heater and said exhaust gases.

' 2. In a charge forming device for interpassa e communicating therewith, means for electrically heating said fuel passage, means for passing exhaust gases in heat conducting relation to said passage and a liquid fuel heat storage body in contact with said fuel passa e and said electric heating means.

3. n a charge forming device for internal combustion engines, a chamber in open communication with the engine inlet mani fold. a body of heat storage liquid in said chamber, means for passing exhaust gases in heat conducting relation to said liquid, means for automatically .maintaining the level of said body of liquid, a conduit passing through said liquid and connected with the engine inlet and means for supplying said conduit with fuel.

4. A charge forming device for internal combustion engines, comprising means for forming relative rich mixtures'of liquid fuel and air, a tortuous passage between said means and the engine inlet manifold, an electrie heater for said passage, means for lpassing exhaust gases in heat transferring relation to said passage, and a liquid heat storage agent surrounding said passage and. arranged in heat transferring relation thereto.

5. In a charge forming device for internal combustion engines, a Walled passage for exhaust gases, a tube coiled around said passage and having its outlet in communication with the engine inlet manifold', a fuel nozzle communicating with the inlet of said within said chamber in contact with said passage, said tube and said electric heater.

6. In a charge forming device for internal combustion engines, a fuel nozzle, a tortuous passage communicating therewith, means for electrically heating said passage and a heat storage body of liquid arranged in contact with said electric heater.' p

7. In a charge forming device for internal combustion engines, a fuel nozzle, a fuel passage communicating therewith, means for electrically heating said fuel passage and a l heat storage body of liquid in contact With said fuel passage and said electric heating means.

8. In a charge forming device for internal combustion engines, a tortuoustubular pas' said passage and means for maintaining a supply of liquid fuel in said chamber.

In testimony whereof, I have hereunto subscribed my name this 7th day of June,

. ALBERT SCHMIID.

Copies of this patent may be obtained for ve cents each, by addressing the commissioner of Patents,

Washington, I). G. a 

